Portable ventilator having adjustable mounting means



Feb. 17, 1948. wlNOGROND 2,436,344-

PORTABLE VENTILATOR HAVING ADJUSTABLE MOUNTING MEANS Filed April 17, 1944 Patented Feb. 17, 1948 PORTABLE VENTILATOR HAVING ADJUST- ABLE MOUNTING MEANS Milton J. Winogrond, Philadelphia, Pa. Application April 17, 1944, Serial No. 531,316

4 Claims. (01. 98-94) This invention relates to a portable ventilator, and more particularly to a motor-operated ventilator arrangement adapted to be conveniently moved from window to window.

One'feature of this invention is that it provides an improved ventilator; another feature of this invention is that it provides forced ventilation with all the efliciency of a built-in power ventilator; still another feature of this invention is.

and securely holds in place when in operative position. Other features and advantages of this invention will be apparent from the following specifications and the drawing, in which:

Figure l is an elevational view of the side of the'ventilator which faces into the room when it is in use; Figure 2 is a top plan view of the ventilator shown in Figure 1; and Figure 3 is an enlarged fragmentary detailed view, partly in section, showing the locking means.

Motor-operated or forced ventilation arrangements are much more satisfactory than merely opening a window. By the use of such a ventilator a room may be quickly and conveniently cleared of smoke or cooking odor, for. example; or fresh air may be drawn into the room regardless of whether or not there is sufficient wind to create a natural draft. It is for this reason that factories, restaurant kitchens, and the like are generally provided with forced ventilation arrangements. The provision of a plurality of such arrangements throughout the home would be too expensive for the ordinary person, however, and it is to" fillthe need for such ventilation in the home that I have developed the portable ventilator here disclosed and claimed.

It is"qu ite easy to lift the lower sash of a window, or drop the upper sash, and slip in a ventilator. .Ordinary ventilators not carrying a motor-driven. fan have heretofore been made with two body portions sliding or telescoping in each and heretofore this, has been possible only when once has been willing permanently to install'a ventilator at the top of one window, as by screwing it or nailing it in place.

My improved portable ventilator can be used equally well at either top or bottom of a window; and, when used at the top of the window, the ventilator holds itself in place firmly, without the use of any screws or other fastening means, and yet can be very quickly and easily removed.

I follow prior ventilator construction to the extent of providing two main body members having a certain amount of sliding movement with respect to each other, so that the ventilator can be widened or narrowed to fit different width window frames; and I provide an appropriate ventilating opening in at least one of these body portions, and mount an electric fan in operative relation to such opening. I have gone beyond anything in the prior art, however, by providing a pressure member at one end of the ventilator which has at least limited movement toward and away from the end of the body member on which it is mounted; by providing spring means for urging this pressure member away from the adjacent body member; by providing locking means of a particular type for locking the body members in desired relative position; and by providing manually operable means for contracting the springs or rendering the spring means ineffective when the ventilator is being installed in or re moved from a window. Referring now more particularly'to the specific embodiment of my invention illustrated in the drawing, the ventilator is shown as comprising two principal body parts IE! and H. The top and bottom edges of each of these members are turned over to provide channel portions la and 10b, on the one hand, and Ila and lib on the other hand. Reference being had particularly to the left side of Figure 1, it will be seen that these channel portions interengage to permit a sliding or telescoping relative movement between the body members. That is, if it is desired to increase the width of the ventilator, the member I0 could be kept in the same position and the member H moved to the left, speaking with respect to the position of the parts as shown in Figure l.

The body member in is provided with a circular opening here identified as Hlc, which may for example have a diameter of eight or ten inches. In order to prevent insects from getting into the house this opening is shown as provided with a screen I2. A fan comprising the blades l3a-d and the motor I4 is mounted in operative relation to this opening by means of a supporting which may be best seen in Figure 3. This lock- I trio members 26 and 2'! turned to the position shownin. the drawing. This frees the springs,

ing means comprises a ratchet rack H mounted on the member ID in the lower channel thereof; and a cooperating engaging member l8 having one end, here identified as [8a, formed as a tooth 4 the top of a window, for example, the eccentric members are turned counter-clockwise until the pressure member is at its innermost position, the springs being compressed and ineifective to move the pressure member outwardly. Then the upper sash of the window is lowered, the ventilator placed in position up against the top of the window frame, and its sections or body portions pulled apart until engagement of the surfaces and 21' with the sidesof the window frame prevent further outward movement. The ventilator ,is then held in place with one hand and the eccenand their force causes the pressure surfaces 20 and 2i to; engage the sides of the window frame to engage the teeth of the ratchet l1, and its other end, here identified as l8b, fastened on the memof course, be duplicated in the. other edge or chan- Uriel.

v ,At one end of. one of the body members, here shown as, the. left end of the member H, 1. pro- ,vide a .pressuremember Hi. The outer or left band edge of this member, and the right band:-

.edge of the body member [0, are here shown as provided with rubber pressure. surfaces here identified. as 2!]- andzi, respectively. These surfaces are designed. to engage and gripthe side surfaces of the window frame in which the ventilator is;

installed. If desired, these rubber friction sur- ..faces can be replacedby serrated metal gripping surfaces. which bite into the wood of the window frame and provide an even more positive grip.

The pressure member I9 has. two T-shaped rod,-

members 22 and 23 rigidlymounted therein, these rod members passing slidably through openings in .the flange lie of the body. member ii. Between such flange andthepressure member 19, and surrounding the rod members 22 and 23, are springs 24 and 25.urging the pressure member away from the end oiv the body member on which it is mounted.

A pair of manually operable eccentric members, here identified as 26 and 21, are pivotally mounted on the body member if, witheccentric or spirally formed slots 26a and 21a engaging the heads of the members '22 and 23. In the posi .tion shown in the drawings, the pressure memher [9 is at the. limit of its possible outward movement, If the. eccentric members are operated, however, the action of the slots pulls thev pressure member" incloser to theend of the. body member on which it is mounted. The parts must be so designed that this rangeof movementis slightly greater than the spacing of the teeth in the rack of the locking means; and the heads of the rod members, must be capable of free movement. in the eccentric members when these members are in the position shown in the drawings. In, order to close the opening between the ,pressure member. l9 and the adjacent endof the body member. H, I provided a strip of flexible material, as cloth, here identified as 28.

. When it is desired toplace the ventilator in" tion.

touches the lower edge of the ventilator, the cord with suflicient force to hold the ventilator in posi- The upper sash is then raised until it plugged into any convenient outlet, and the fan turned on to provide the desired ventilation.

Whenever it desired to. move. the. ventilator it is only necessary to hold it in position-with one hand while the springs are rendered inefiective by operation of the eccentric. members and 27, whereupon thev ventilator can be easily in a. bedroom window during the. night.

-lii'ted out of the window. Either before or immediately after it is lifted out, the lock means may be manipulated to permit the 'body members to slide together to the. position shown in Figure 1,

thereupon the ventilator is. ready to. be immediately installed in another window; 'Ihisprovides a portable ventilator which may be. easily, conveniently, and quickly moved fromwindo-w to window in the home or ofiice. In the. home, for

.example, the, ventilator may be used in. the

' single window ventilator.

While Ihave shown and described certain embodiments ,of'my invention, it is to-be understood that it 7 is capable of many modifications. Changes, therefore, in the construction end arrangement may bemade without departing from the spirit and scope of the invention as disclosed in the appended claims.

I claim: I

l. A portable ventilator of the character :described, including: a first. closure section; a second closure section, said sections having interengaging portions arranged for telescoping relative movement between the sections; a ventilating opening in at least one of the sections; a

. power driven fan mounted on the sectionhaving the opening therein with its fan portion adjacent the opening; locking means for holding said sections in desired relation to each. other, this means comprising a ratchetv racloon oneuof. the closure sections and a yielding engaging element on the other closure section; a pressure'device mounted on thelouter end of onset said closure sections and movable, with respect thereto; fflexible means connecting the pressure, device and the closure section on which itis mounted; spring means for urging said pressure device away from the closure section on which it is mounted; and means for rendering the spring meansineffective, this means comprising an eccentric arm.

2. In a portable ventilator, a first closure section, a second closure section, said sections having interengaging means along their longitudinal edgeslto enablethe sections to. be longitudinally movable with relation to each other, a ratchet rack in the edge portion of one of said sections, a resiliently mounted tooth in the edge portion of the other section adapted to move with it along the rack to lock the sections apart, a pressure bar mounted on the outer end of one of said sections and movable with respect thereto,

spring means for urging said pressure bar away from the section on which it is mounted, means for selectively rendering the spring means inefiective and simultaneously drawing the pressure bar inwardly, whereby the two sections may be roughly adjusted in a window opening by moving them apart until their ends approximately contact the sides of the window opening and then releasing the selective means to cause the pressure bar to move outwardly under the spring action and complete the gripping action of the ventilator in the window opening, said selective means including a swingable arm having an eccentric slot.

3. A portable ventilator of the character described, including a first closure section, a second closure section, said sections being relatively movable, locking means for holding said sections in roughly adjusted position in a window opening, a pressure bar mounted on the outer end of one of said closure sections and movable with respect thereto, spring means for urging said pressure bar away from the closure section on which it is mounted and means for selectively rendering the spring meansineffective, whereby the closure sections may be roughly adjusted in a window opening by the locking means and finally firmly held in the window opening by releasing the selective means, said last mentioned means including a rotatable arm having a cam slot therein.

4. A portable ventilator of the character described, including a first closure section, a sec-' ond closure section, said sections being relatively movable, locking means for holding said sections in roughly adjusted position in a window opening,

a pressure bar mounted on the outer end of one of said closure sections and movable with respect thereto, spring means for urging said pressure bar away from the closure section on which it is mounted and means for selectively rendering the spring means ineffective, whereby the closure sections may be roughly adjusted in a window opening by the locking means and finally firmly held in the window opening by releasing the selective means, said locking means including a ratchet rack on one of the closure sections and a yielding element on the other closure section, said spring means including a rod having a lateral projection, and said selective means including an arm having a cam slot receiving said lateral projection.

MILTON J. WINOGROND.

REFERENCES CITED The following references are of record in the file of this patent:

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